Multiply or divide. Simplify, if possible. Assume all variables and radicands represent nonnegative real numbers.(
)(
)
A. 5x4y4
B. 5x4y4
C. 25x8y8
D. 5
Answer: B
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Solve the problem.Evaluate 
by writing the integrand as an integral.
A. ln 
B. ln 
C. 
ln 
D. 
ln 
Translate the problem to a system of equations, then solve using matrices.A $114,000 trust is to be invested in bonds paying 6%, CDs paying 5%, and mortgages paying 9%. The sum of the bond and CD investment must equal the mortgage investment. To earn an $8360 annual income from the investments, how much should the bank invest in bonds?
A. $57,000 B. $19,000 C. $36,000 D. $38,000
Solve the equation.
= x2 + 8x
A. -1, 1 B. -8, 1 C. -8, -1, 1 D. -8, -1
Solve the problem.The quadratic function 
models the median, or average, age, y, at which U.S. men were first married x years after 1900. In which year was this average age at a minimum? (Round to the nearest year.) What was the average age at first marriage for that year? (Round to the nearest tenth.)
A. 1964, 51.3 years old B. 1936, 51.3 years old C. 1953, 36 years old D. 1964, 21.9 years old